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astrophysics

Latest Articles

An illustration of an extra-large black hole.
Abstractions blog

A Black Hole So Big It ‘Should Not Exist’

By Natalie Wolchover
August 28, 2019
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Researchers have confirmed rumors of a black hole collision that challenges our ideas about how black holes form.

Illustration of three black holes on a starry background
Abstractions blog

To Make Two Black Holes Collide, Try Three

By Erika K. Carlson
August 15, 2019
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How do black holes merge and make gravitational waves? Maybe with a little help from their friends.

An illustration of the cosmologists Wendy Freedman and Adam Riess debating the expansion rate of the universe at a recent meeting at the Kavli Institute for Theoretical Physics in Santa Barbara, California.
cosmology

Cosmologists Debate How Fast the Universe Is Expanding

By Natalie Wolchover
August 8, 2019
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New measurements could upend the standard theory of the cosmos that has reigned since the discovery of dark energy 21 years ago.

Abstractions blog

Sun’s Puzzling Plasma Recreated in a Laboratory

By Erika K. Carlson
July 29, 2019
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For the first time, researchers have created a scale model of the twisting loops of the sun’s magnetic field.

Artists impression of AGN driven outflows from a dwarf galaxy
Abstractions blog

Big Black Holes Found in the Smallest Galaxies

By Ramin Skibba
July 23, 2019
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Tiny, dim “dwarf” galaxies have been found to hide gas-spewing black holes.

planetary science

Wandering Space Rocks Help Solve Mysteries of Planet Formation

By Rebecca Boyle
July 16, 2019
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After an interstellar asteroid shot past the sun, scientists realized that there’s probably a lot of itinerant rocks out there.

Art for "The Sun Is Stranger Than Astrophysicists Imagined"
astrophysics

The Sun Is Stranger Than Astrophysicists Imagined

By Natalie Wolchover
May 1, 2019
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The sun radiates far more high-frequency light than expected, raising questions about unknown features of the sun’s magnetic field and the possibility of even more exotic physics.

Art for "Dark Matter Gets a Reprieve in New Analysis"
Abstractions blog

Dark Matter Gets a Reprieve in New Analysis

By Charlie Wood
April 29, 2019
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A strange glow coming from the Milky Way’s center was thought to be due to ordinary pulsars. But a new look at a years-old study shows that dark matter might still be responsible.

Q&A

The Astronomer Who’d Rather Build Space Cameras

By Ann Finkbeiner
April 18, 2019
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Jim Gunn shaped the theory of the evolution of the cosmos before building cameras and spectrographs for major observatories like the Hubble Space Telescope.


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